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Sightmark Bore Sights are an accurate, reliable way to sight your new riflescope. These Sightmark products maintain the company's standard of excellence and have won awards for their superior design. Universal bore sights as well as SightMark bore sights for different caliber weapons allow you to choose the best weapon accessory for your particular rifle scope and firearm. When you zero in your Sightmark rifle scope with a Sight Mark boresight, you can be sure everything is in perfect sync.